This study compares two self-report instruments - the Dutch version of Cloninger's Temperament and Character Inventory (TCI) and the Questionnaire on Personality Traits (VKP) - in a Dutch sample of 148 people in a healthy population. The aims of this study are to create a norm group for the Dutch TCI, to investigate the psychometric properties of the TCI, and to examine the relationship between temperament, character (as measured by the TCI), and personality disorders (as measured by the VKP). The Dutch TCI has a good internal consistency. Some scales do intercorrelate. Seven factors can be identified with principal components analysis. T-tests show differences between the mean score of this Dutch population and Cloninger's community sample. According to the results of correlations and multiple regression of the TCI and the VKP, the self-directedness scale can predict the presence or absence of a personality disorder. Other scales might predict the type of personality disorder. It is concluded that the TCI can be a useful aid in the assessment of personality disorders.